If you want to have 3TB HDD or XEON CPU with your Dell Inspiron 530 - flash the BIOS from COMMAND PROMPT with ADMINISTRATOR RIGHTS using the Xeon. (will flash with the old BIOS in case you want to get back) Dell 530 Mini Tower - but ONLY the batch factory equipped with 350W PS (and probably with G33M03) support officially: Yorkfield Quad Core, Q8200, 2.33GHz, 4MB, 1333FSB, M1 Yorkfield Quad Core, Q8300, 2.50GHz, 4MB, 95W, R0 Yorkfield Quad Core, QX9300, 2.50GHz, 6MB, 1333FSB, M1 Yorkfield Quad Core, Q9400, 2.66GHz, 6MB, 1333FSB, R0 Yorkfield Quad Core, Q9450, 2.66GHz, 12MB, 1333FSB, C1 Yorkfield Quad Core, Q9550, 2.83GHz, 12MB, 1333FSB, C1 Yorkfield Quad Core, Q9550, 2.83GHz, 12MB, 1333FSB, E0 Yorkfield Quad Core, Q9650, 3.00GHz, 12MB, 1333FSB, E0 Kentsfield Quad Core, Q6600, 2.4GHz, 8MB, 1066FSB, G0 530s (Slim Line) does NOT support any QUAD-CORE officially.
From Software point of view - it is pretty safe to flash this BIOS-MOD - you will not brick anything, just by flashing ON THE CORRECT Motherboard.
Video: Intel integrated video Bad news, you CANNOT upgrade your RAMs more than 4GB since the Inspiron 530 has a 4GB RAM limit as well as the DDR2 SDRAM model is too old, and has a very slow performance comparing to the today's RAMs.
In fact, the case could easily have been made a few inches shorter without much effort and without making things too hot.
Elsewhere the insides conform to a very typical layout and if you do fancy upgrading (outside the warranty of course) you shouldn't have any problems.
This decent-performing system will likely leave you looking elsewhere to get better bang for your buck.
Visually, the silver-and-white Inspiron 530 is easy on the eyes.